For the second straight practice, Arizona Cardinals QB Carson Palmer was not a participant, instead, he was seen working out with a trainer on the sideline.
QB Carson Palmer came out to practice without a helmet and was working on the side with a trainer. Looks like no practice for him.
— Darren Urban (@Cardschatter) October 20, 2016
This could indicate that his hamstring injury is more serious that previously thought. Palmer missed a game earlier this season, but that was due to a concussion.